Event trayIcon.MiddleClick seems not to be raised

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Thanks for your reply Gintaras.
I'm working on Windows10 with OpenShellMenu Version 4.4.170 as Taskbar-Replacement  https://github.com/Open-Shell/Open-Shell-Menu.
Because meanwhile an updated version of Openshell4.4.191 is out, I'm going to test if these bug is fixed or not.